From cc7522b25bfc0157eb51777f8345812e79760179 Mon Sep 17 00:00:00 2001 From: Karl DeBisschop Date: Tue, 18 Mar 2003 07:47:37 +0000 Subject: from GNU fileutils for check_disk git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@429 f882894a-f735-0410-b71e-b25c423dba1c --- lib/afs.m4 | 12 + lib/fstypename.m4 | 32 +++ lib/fsusage.c | 281 +++++++++++++++++++ lib/fsusage.h | 45 ++++ lib/fsusage.m4 | 194 ++++++++++++++ lib/ls-mntd-fs.m4 | 243 +++++++++++++++++ lib/mountlist.c | 788 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ lib/mountlist.h | 50 ++++ 8 files changed, 1645 insertions(+) create mode 100644 lib/afs.m4 create mode 100644 lib/fstypename.m4 create mode 100644 lib/fsusage.c create mode 100644 lib/fsusage.h create mode 100644 lib/fsusage.m4 create mode 100644 lib/ls-mntd-fs.m4 create mode 100644 lib/mountlist.c create mode 100644 lib/mountlist.h (limited to 'lib') diff --git a/lib/afs.m4 b/lib/afs.m4 new file mode 100644 index 00000000..13f3bc96 --- /dev/null +++ b/lib/afs.m4 @@ -0,0 +1,12 @@ +#serial 3 + +AC_DEFUN(jm_AFS, + AC_MSG_CHECKING(for AFS) + if test -d /afs; then + AC_DEFINE(AFS, 1, [Define if you have the Andrew File System.]) + ac_result=yes + else + ac_result=no + fi + AC_MSG_RESULT($ac_result) +) diff --git a/lib/fstypename.m4 b/lib/fstypename.m4 new file mode 100644 index 00000000..70abc12b --- /dev/null +++ b/lib/fstypename.m4 @@ -0,0 +1,32 @@ +#serial 2 + +dnl From Jim Meyering. +dnl +dnl See if struct statfs has the f_fstypename member. +dnl If so, define HAVE_F_FSTYPENAME_IN_STATFS. +dnl + +AC_DEFUN(jm_FSTYPENAME, + [ + AC_CACHE_CHECK([for f_fstypename in struct statfs], + fu_cv_sys_f_fstypename_in_statfs, + [ + AC_TRY_COMPILE( + [ +#include +#include +#include + ], + [struct statfs s; int i = sizeof s.f_fstypename;], + fu_cv_sys_f_fstypename_in_statfs=yes, + fu_cv_sys_f_fstypename_in_statfs=no + ) + ] + ) + + if test $fu_cv_sys_f_fstypename_in_statfs = yes; then + AC_DEFINE_UNQUOTED(HAVE_F_FSTYPENAME_IN_STATFS, 1, + [Define if struct statfs has the f_fstypename member.]) + fi + ] +) diff --git a/lib/fsusage.c b/lib/fsusage.c new file mode 100644 index 00000000..5a864bf2 --- /dev/null +++ b/lib/fsusage.c @@ -0,0 +1,281 @@ +/* fsusage.c -- return space usage of mounted filesystems + Copyright (C) 1991, 1992, 1996, 1998, 1999 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#include "../plugins/config.h" + +#if HAVE_INTTYPES_H +# include +#endif +#include +#include +#include "fsusage.h" + +#if HAVE_LIMITS_H +# include +#endif +#ifndef CHAR_BIT +# define CHAR_BIT 8 +#endif + +int statfs (); + +#if HAVE_SYS_PARAM_H +# include +#endif + +#if HAVE_SYS_MOUNT_H +# include +#endif + +#if HAVE_SYS_VFS_H +# include +#endif + +#if HAVE_SYS_FS_S5PARAM_H /* Fujitsu UXP/V */ +# include +#endif + +#if defined (HAVE_SYS_FILSYS_H) && !defined (_CRAY) +# include /* SVR2 */ +#endif + +#if HAVE_FCNTL_H +# include +#endif + +#if HAVE_SYS_STATFS_H +# include +#endif + +#if HAVE_DUSTAT_H /* AIX PS/2 */ +# include +#endif + +#if HAVE_SYS_STATVFS_H /* SVR4 */ +# include +int statvfs (); +#endif + +/* Many space usage primitives use all 1 bits to denote a value that is + not applicable or unknown. Propagate this information by returning + a uintmax_t value that is all 1 bits if the argument is all 1 bits, + even if the argument is unsigned and smaller than uintmax_t. */ +#define PROPAGATE_ALL_ONES(x) ((x) == -1 ? (uintmax_t) -1 : (uintmax_t) (x)) + +/* Extract the top bit of X as an uintmax_t value. */ +#define EXTRACT_TOP_BIT(x) ((x) \ + & ((uintmax_t) 1 << (sizeof (x) * CHAR_BIT - 1))) + +/* If a value is negative, many space usage primitives store it into an + integer variable by assignment, even if the variable's type is unsigned. + So, if a space usage variable X's top bit is set, convert X to the + uintmax_t value V such that (- (uintmax_t) V) is the negative of + the original value. If X's top bit is clear, just yield X. + Use PROPAGATE_TOP_BIT if the original value might be negative; + otherwise, use PROPAGATE_ALL_ONES. */ +#define PROPAGATE_TOP_BIT(x) ((x) | ~ (EXTRACT_TOP_BIT (x) - 1)) + +int safe_read (); + +/* Fill in the fields of FSP with information about space usage for + the filesystem on which PATH resides. + DISK is the device on which PATH is mounted, for space-getting + methods that need to know it. + Return 0 if successful, -1 if not. When returning -1, ensure that + ERRNO is either a system error value, or zero if DISK is NULL + on a system that requires a non-NULL value. */ +int +get_fs_usage (const char *path, const char *disk, struct fs_usage *fsp) +{ +#ifdef STAT_STATFS3_OSF1 + + struct statfs fsd; + + if (statfs (path, &fsd, sizeof (struct statfs)) != 0) + return -1; + + fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_fsize); + +#endif /* STAT_STATFS3_OSF1 */ + +#ifdef STAT_STATFS2_FS_DATA /* Ultrix */ + + struct fs_data fsd; + + if (statfs (path, &fsd) != 1) + return -1; + + fsp->fsu_blocksize = 1024; + fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.fd_req.btot); + fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.fd_req.bfree); + fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.fd_req.bfreen); + fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.fd_req.bfreen) != 0; + fsp->fsu_files = PROPAGATE_ALL_ONES (fsd.fd_req.gtot); + fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.fd_req.gfree); + +#endif /* STAT_STATFS2_FS_DATA */ + +#ifdef STAT_READ_FILSYS /* SVR2 */ +# ifndef SUPERBOFF +# define SUPERBOFF (SUPERB * 512) +# endif + + struct filsys fsd; + int fd; + + if (! disk) + { + errno = 0; + return -1; + } + + fd = open (disk, O_RDONLY); + if (fd < 0) + return -1; + lseek (fd, (off_t) SUPERBOFF, 0); + if (safe_read (fd, (char *) &fsd, sizeof fsd) != sizeof fsd) + { + close (fd); + return -1; + } + close (fd); + + fsp->fsu_blocksize = (fsd.s_type == Fs2b ? 1024 : 512); + fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.s_fsize); + fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.s_tfree); + fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.s_tfree); + fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.s_tfree) != 0; + fsp->fsu_files = (fsd.s_isize == -1 + ? (uintmax_t) -1 + : (fsd.s_isize - 2) * INOPB * (fsd.s_type == Fs2b ? 2 : 1)); + fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.s_tinode); + +#endif /* STAT_READ_FILSYS */ + +#ifdef STAT_STATFS2_BSIZE /* 4.3BSD, SunOS 4, HP-UX, AIX */ + + struct statfs fsd; + + if (statfs (path, &fsd) < 0) + return -1; + + fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_bsize); + +# ifdef STATFS_TRUNCATES_BLOCK_COUNTS + + /* In SunOS 4.1.2, 4.1.3, and 4.1.3_U1, the block counts in the + struct statfs are truncated to 2GB. These conditions detect that + truncation, presumably without botching the 4.1.1 case, in which + the values are not truncated. The correct counts are stored in + undocumented spare fields. */ + if (fsd.f_blocks == 0x7fffffff / fsd.f_bsize && fsd.f_spare[0] > 0) + { + fsd.f_blocks = fsd.f_spare[0]; + fsd.f_bfree = fsd.f_spare[1]; + fsd.f_bavail = fsd.f_spare[2]; + } +# endif /* STATFS_TRUNCATES_BLOCK_COUNTS */ + +#endif /* STAT_STATFS2_BSIZE */ + +#ifdef STAT_STATFS2_FSIZE /* 4.4BSD */ + + struct statfs fsd; + + if (statfs (path, &fsd) < 0) + return -1; + + fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_fsize); + +#endif /* STAT_STATFS2_FSIZE */ + +#ifdef STAT_STATFS4 /* SVR3, Dynix, Irix, AIX */ + +# if !_AIX && !defined _SEQUENT_ && !defined DOLPHIN +# define f_bavail f_bfree +# endif + + struct statfs fsd; + + if (statfs (path, &fsd, sizeof fsd, 0) < 0) + return -1; + + /* Empirically, the block counts on most SVR3 and SVR3-derived + systems seem to always be in terms of 512-byte blocks, + no matter what value f_bsize has. */ +# if _AIX || defined(_CRAY) + fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_bsize); +# else + fsp->fsu_blocksize = 512; +# endif + +#endif /* STAT_STATFS4 */ + +#ifdef STAT_STATVFS /* SVR4 */ + + struct statvfs fsd; + + if (statvfs (path, &fsd) < 0) + return -1; + + /* f_frsize isn't guaranteed to be supported. */ + fsp->fsu_blocksize = + PROPAGATE_ALL_ONES (fsd.f_frsize ? fsd.f_frsize : fsd.f_bsize); + +#endif /* STAT_STATVFS */ + +#if !defined(STAT_STATFS2_FS_DATA) && !defined(STAT_READ_FILSYS) + /* !Ultrix && !SVR2 */ + + fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.f_blocks); + fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.f_bfree); + fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.f_bavail); + fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.f_bavail) != 0; + fsp->fsu_files = PROPAGATE_ALL_ONES (fsd.f_files); + fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.f_ffree); + +#endif /* not STAT_STATFS2_FS_DATA && not STAT_READ_FILSYS */ + + return 0; +} + +#if defined(_AIX) && defined(_I386) +/* AIX PS/2 does not supply statfs. */ + +int +statfs (char *path, struct statfs *fsb) +{ + struct stat stats; + struct dustat fsd; + + if (stat (path, &stats)) + return -1; + if (dustat (stats.st_dev, 0, &fsd, sizeof (fsd))) + return -1; + fsb->f_type = 0; + fsb->f_bsize = fsd.du_bsize; + fsb->f_blocks = fsd.du_fsize - fsd.du_isize; + fsb->f_bfree = fsd.du_tfree; + fsb->f_bavail = fsd.du_tfree; + fsb->f_files = (fsd.du_isize - 2) * fsd.du_inopb; + fsb->f_ffree = fsd.du_tinode; + fsb->f_fsid.val[0] = fsd.du_site; + fsb->f_fsid.val[1] = fsd.du_pckno; + return 0; +} + +#endif /* _AIX && _I386 */ diff --git a/lib/fsusage.h b/lib/fsusage.h new file mode 100644 index 00000000..e0c0db58 --- /dev/null +++ b/lib/fsusage.h @@ -0,0 +1,45 @@ +/* fsusage.h -- declarations for filesystem space usage info + Copyright (C) 1991, 1992, 1997 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* Space usage statistics for a filesystem. Blocks are 512-byte. */ + +#if !defined FSUSAGE_H_ +# define FSUSAGE_H_ + +struct fs_usage +{ + int fsu_blocksize; /* Size of a block. */ + uintmax_t fsu_blocks; /* Total blocks. */ + uintmax_t fsu_bfree; /* Free blocks available to superuser. */ + uintmax_t fsu_bavail; /* Free blocks available to non-superuser. */ + int fsu_bavail_top_bit_set; /* 1 if fsu_bavail represents a value < 0. */ + uintmax_t fsu_files; /* Total file nodes. */ + uintmax_t fsu_ffree; /* Free file nodes. */ +}; + +# ifndef PARAMS +# if defined PROTOTYPES || (defined __STDC__ && __STDC__) +# define PARAMS(Args) Args +# else +# define PARAMS(Args) () +# endif +# endif + +int get_fs_usage PARAMS ((const char *path, const char *disk, + struct fs_usage *fsp)); + +#endif diff --git a/lib/fsusage.m4 b/lib/fsusage.m4 new file mode 100644 index 00000000..d5c646f4 --- /dev/null +++ b/lib/fsusage.m4 @@ -0,0 +1,194 @@ +#serial 7 + +# From fileutils/configure.in + +# Try to determine how a program can obtain filesystem usage information. +# If successful, define the appropriate symbol (see fsusage.c) and +# execute ACTION-IF-FOUND. Otherwise, execute ACTION-IF-NOT-FOUND. +# +# jm_FILE_SYSTEM_USAGE([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]) + +AC_DEFUN(jm_FILE_SYSTEM_USAGE, +[ + +echo "checking how to get filesystem space usage..." +ac_fsusage_space=no + +# Perform only the link test since it seems there are no variants of the +# statvfs function. This check is more than just AC_CHECK_FUNCS(statvfs) +# because that got a false positive on SCO OSR5. Adding the declaration +# of a `struct statvfs' causes this test to fail (as it should) on such +# systems. That system is reported to work fine with STAT_STATFS4 which +# is what it gets when this test fails. +if test $ac_fsusage_space = no; then + # SVR4 + AC_CACHE_CHECK([for statvfs function (SVR4)], fu_cv_sys_stat_statvfs, + [AC_TRY_LINK([#include +#include ], + [struct statvfs fsd; statvfs (0, &fsd);], + fu_cv_sys_stat_statvfs=yes, + fu_cv_sys_stat_statvfs=no)]) + if test $fu_cv_sys_stat_statvfs = yes; then + ac_fsusage_space=yes + AC_DEFINE_UNQUOTED(STAT_STATVFS, 1, + [ Define if there is a function named statvfs. (SVR4)]) + fi +fi + +if test $ac_fsusage_space = no; then + # DEC Alpha running OSF/1 + AC_MSG_CHECKING([for 3-argument statfs function (DEC OSF/1)]) + AC_CACHE_VAL(fu_cv_sys_stat_statfs3_osf1, + [AC_TRY_RUN([ +#include +#include +#include + main () + { + struct statfs fsd; + fsd.f_fsize = 0; + exit (statfs (".", &fsd, sizeof (struct statfs))); + }], + fu_cv_sys_stat_statfs3_osf1=yes, + fu_cv_sys_stat_statfs3_osf1=no, + fu_cv_sys_stat_statfs3_osf1=no)]) + AC_MSG_RESULT($fu_cv_sys_stat_statfs3_osf1) + if test $fu_cv_sys_stat_statfs3_osf1 = yes; then + ac_fsusage_space=yes + AC_DEFINE_UNQUOTED(STAT_STATFS3_OSF1, 1, + [ Define if statfs takes 3 args. (DEC Alpha running OSF/1)]) + fi +fi + +if test $ac_fsusage_space = no; then +# AIX + AC_MSG_CHECKING([for two-argument statfs with statfs.bsize dnl +member (AIX, 4.3BSD)]) + AC_CACHE_VAL(fu_cv_sys_stat_statfs2_bsize, + [AC_TRY_RUN([ +#ifdef HAVE_SYS_PARAM_H +#include +#endif +#ifdef HAVE_SYS_MOUNT_H +#include +#endif +#ifdef HAVE_SYS_VFS_H +#include +#endif + main () + { + struct statfs fsd; + fsd.f_bsize = 0; + exit (statfs (".", &fsd)); + }], + fu_cv_sys_stat_statfs2_bsize=yes, + fu_cv_sys_stat_statfs2_bsize=no, + fu_cv_sys_stat_statfs2_bsize=no)]) + AC_MSG_RESULT($fu_cv_sys_stat_statfs2_bsize) + if test $fu_cv_sys_stat_statfs2_bsize = yes; then + ac_fsusage_space=yes + AC_DEFINE_UNQUOTED(STAT_STATFS2_BSIZE, 1, +[ Define if statfs takes 2 args and struct statfs has a field named f_bsize. + (4.3BSD, SunOS 4, HP-UX, AIX PS/2)]) + fi +fi + +if test $ac_fsusage_space = no; then +# SVR3 + AC_MSG_CHECKING([for four-argument statfs (AIX-3.2.5, SVR3)]) + AC_CACHE_VAL(fu_cv_sys_stat_statfs4, + [AC_TRY_RUN([#include +#include + main () + { + struct statfs fsd; + exit (statfs (".", &fsd, sizeof fsd, 0)); + }], + fu_cv_sys_stat_statfs4=yes, + fu_cv_sys_stat_statfs4=no, + fu_cv_sys_stat_statfs4=no)]) + AC_MSG_RESULT($fu_cv_sys_stat_statfs4) + if test $fu_cv_sys_stat_statfs4 = yes; then + ac_fsusage_space=yes + AC_DEFINE_UNQUOTED(STAT_STATFS4, 1, + [ Define if statfs takes 4 args. (SVR3, Dynix, Irix, Dolphin)]) + fi +fi + +if test $ac_fsusage_space = no; then +# 4.4BSD and NetBSD + AC_MSG_CHECKING([for two-argument statfs with statfs.fsize dnl +member (4.4BSD and NetBSD)]) + AC_CACHE_VAL(fu_cv_sys_stat_statfs2_fsize, + [AC_TRY_RUN([#include +#ifdef HAVE_SYS_PARAM_H +#include +#endif +#ifdef HAVE_SYS_MOUNT_H +#include +#endif + main () + { + struct statfs fsd; + fsd.f_fsize = 0; + exit (statfs (".", &fsd)); + }], + fu_cv_sys_stat_statfs2_fsize=yes, + fu_cv_sys_stat_statfs2_fsize=no, + fu_cv_sys_stat_statfs2_fsize=no)]) + AC_MSG_RESULT($fu_cv_sys_stat_statfs2_fsize) + if test $fu_cv_sys_stat_statfs2_fsize = yes; then + ac_fsusage_space=yes + AC_DEFINE_UNQUOTED(STAT_STATFS2_FSIZE, 1, +[ Define if statfs takes 2 args and struct statfs has a field named f_fsize. + (4.4BSD, NetBSD)]) + fi +fi + +if test $ac_fsusage_space = no; then + # Ultrix + AC_MSG_CHECKING([for two-argument statfs with struct fs_data (Ultrix)]) + AC_CACHE_VAL(fu_cv_sys_stat_fs_data, + [AC_TRY_RUN([#include +#ifdef HAVE_SYS_PARAM_H +#include +#endif +#ifdef HAVE_SYS_MOUNT_H +#include +#endif +#ifdef HAVE_SYS_FS_TYPES_H +#include +#endif + main () + { + struct fs_data fsd; + /* Ultrix's statfs returns 1 for success, + 0 for not mounted, -1 for failure. */ + exit (statfs (".", &fsd) != 1); + }], + fu_cv_sys_stat_fs_data=yes, + fu_cv_sys_stat_fs_data=no, + fu_cv_sys_stat_fs_data=no)]) + AC_MSG_RESULT($fu_cv_sys_stat_fs_data) + if test $fu_cv_sys_stat_fs_data = yes; then + ac_fsusage_space=yes + AC_DEFINE_UNQUOTED(STAT_STATFS2_FS_DATA, 1, +[ Define if statfs takes 2 args and the second argument has + type struct fs_data. (Ultrix)]) + fi +fi + +if test $ac_fsusage_space = no; then + # SVR2 + AC_TRY_CPP([#include + ], + AC_DEFINE_UNQUOTED(STAT_READ_FILSYS, 1, + [Define if there is no specific function for reading filesystems usage + information and you have the header file. (SVR2)]) + ac_fsusage_space=yes) +fi + +dnl AS_IF([test $ac_fsusage_space = yes], [$1], [$2]) +if test $ac_fsusage_space = yes ; then [$1] ; else [$2] ; fi + +]) diff --git a/lib/ls-mntd-fs.m4 b/lib/ls-mntd-fs.m4 new file mode 100644 index 00000000..695b3ba6 --- /dev/null +++ b/lib/ls-mntd-fs.m4 @@ -0,0 +1,243 @@ +#serial 10 + +dnl From Jim Meyering. +dnl +dnl This is not pretty. I've just taken the autoconf code and wrapped +dnl it in an AC_DEFUN. +dnl + +# jm_LIST_MOUNTED_FILESYSTEMS([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]) +AC_DEFUN(jm_LIST_MOUNTED_FILESYSTEMS, + [ +AC_CHECK_FUNCS(listmntent getmntinfo) +AC_CHECK_HEADERS(mntent.h) + +# Determine how to get the list of mounted filesystems. +ac_list_mounted_fs= + +# If the getmntent function is available but not in the standard library, +# make sure LIBS contains -lsun (on Irix4) or -lseq (on PTX). +AC_FUNC_GETMNTENT + +# This test must precede the ones for getmntent because Unicos-9 is +# reported to have the getmntent function, but its support is incompatible +# with other getmntent implementations. + +# NOTE: Normally, I wouldn't use a check for system type as I've done for +# `CRAY' below since that goes against the whole autoconf philosophy. But +# I think there is too great a chance that some non-Cray system has a +# function named listmntent to risk the false positive. + +if test -z "$ac_list_mounted_fs"; then + # Cray UNICOS 9 + AC_MSG_CHECKING([for listmntent of Cray/Unicos-9]) + AC_CACHE_VAL(fu_cv_sys_mounted_cray_listmntent, + [fu_cv_sys_mounted_cray_listmntent=no + AC_EGREP_CPP(yes, + [#ifdef _CRAY +yes +#endif + ], [test $ac_cv_func_listmntent = yes \ + && fu_cv_sys_mounted_cray_listmntent=yes] + ) + ] + ) + AC_MSG_RESULT($fu_cv_sys_mounted_cray_listmntent) + if test $fu_cv_sys_mounted_cray_listmntent = yes; then + ac_list_mounted_fs=found + AC_DEFINE(MOUNTED_LISTMNTENT, 1, + [Define if there is a function named listmntent that can be used to + list all mounted filesystems. (UNICOS)]) + fi +fi + +if test $ac_cv_func_getmntent = yes; then + + # This system has the getmntent function. + # Determine whether it's the one-argument variant or the two-argument one. + + if test -z "$ac_list_mounted_fs"; then + # 4.3BSD, SunOS, HP-UX, Dynix, Irix + AC_MSG_CHECKING([for one-argument getmntent function]) + AC_CACHE_VAL(fu_cv_sys_mounted_getmntent1, + [test $ac_cv_header_mntent_h = yes \ + && fu_cv_sys_mounted_getmntent1=yes \ + || fu_cv_sys_mounted_getmntent1=no]) + AC_MSG_RESULT($fu_cv_sys_mounted_getmntent1) + if test $fu_cv_sys_mounted_getmntent1 = yes; then + ac_list_mounted_fs=found + AC_DEFINE(MOUNTED_GETMNTENT1, 1, + [Define if there is a function named getmntent for reading the list + of mounted filesystems, and that function takes a single argument. + (4.3BSD, SunOS, HP-UX, Dynix, Irix)]) + fi + fi + + if test -z "$ac_list_mounted_fs"; then + # SVR4 + AC_MSG_CHECKING([for two-argument getmntent function]) + AC_CACHE_VAL(fu_cv_sys_mounted_getmntent2, + [AC_EGREP_HEADER(getmntent, sys/mnttab.h, + fu_cv_sys_mounted_getmntent2=yes, + fu_cv_sys_mounted_getmntent2=no)]) + AC_MSG_RESULT($fu_cv_sys_mounted_getmntent2) + if test $fu_cv_sys_mounted_getmntent2 = yes; then + ac_list_mounted_fs=found + AC_DEFINE(MOUNTED_GETMNTENT2, 1, + [Define if there is a function named getmntent for reading the list of + mounted filesystems, and that function takes two arguments. (SVR4)]) + fi + fi + + if test -z "$ac_list_mounted_fs"; then + AC_MSG_ERROR([could not determine how to read list of mounted filesystems]) + fi + +fi + +if test -z "$ac_list_mounted_fs"; then + # DEC Alpha running OSF/1. + AC_MSG_CHECKING([for getfsstat function]) + AC_CACHE_VAL(fu_cv_sys_mounted_getsstat, + [AC_TRY_LINK([ +#include +#include +#include ], + [struct statfs *stats; + int numsys = getfsstat ((struct statfs *)0, 0L, MNT_WAIT); ], + fu_cv_sys_mounted_getsstat=yes, + fu_cv_sys_mounted_getsstat=no)]) + AC_MSG_RESULT($fu_cv_sys_mounted_getsstat) + if test $fu_cv_sys_mounted_getsstat = yes; then + ac_list_mounted_fs=found + AC_DEFINE(MOUNTED_GETFSSTAT, 1, + [Define if there is a function named getfsstat for reading the + list of mounted filesystems. (DEC Alpha running OSF/1)]) + fi +fi + +if test -z "$ac_list_mounted_fs"; then + # AIX. + AC_MSG_CHECKING([for mntctl function and struct vmount]) + AC_CACHE_VAL(fu_cv_sys_mounted_vmount, + [AC_TRY_CPP([#include ], + fu_cv_sys_mounted_vmount=yes, + fu_cv_sys_mounted_vmount=no)]) + AC_MSG_RESULT($fu_cv_sys_mounted_vmount) + if test $fu_cv_sys_mounted_vmount = yes; then + ac_list_mounted_fs=found + AC_DEFINE(MOUNTED_VMOUNT, 1, + [Define if there is a function named mntctl that can be used to read + the list of mounted filesystems, and there is a system header file + that declares `struct vmount.' (AIX)]) + fi +fi + +if test -z "$ac_list_mounted_fs"; then + # SVR3 + AC_MSG_CHECKING([for FIXME existence of three headers]) + AC_CACHE_VAL(fu_cv_sys_mounted_fread_fstyp, + [AC_TRY_CPP([ +#include +#include +#include ], + fu_cv_sys_mounted_fread_fstyp=yes, + fu_cv_sys_mounted_fread_fstyp=no)]) + AC_MSG_RESULT($fu_cv_sys_mounted_fread_fstyp) + if test $fu_cv_sys_mounted_fread_fstyp = yes; then + ac_list_mounted_fs=found + AC_DEFINE(MOUNTED_FREAD_FSTYP, 1, +[Define if (like SVR2) there is no specific function for reading the + list of mounted filesystems, and your system has these header files: + and . (SVR3)]) + fi +fi + +if test -z "$ac_list_mounted_fs"; then + # 4.4BSD and DEC OSF/1. + AC_MSG_CHECKING([for getmntinfo function]) + AC_CACHE_VAL(fu_cv_sys_mounted_getmntinfo, + [ + ok= + if test $ac_cv_func_getmntinfo = yes; then + AC_EGREP_HEADER(f_type;, sys/mount.h, + ok=yes) + fi + test -n "$ok" \ + && fu_cv_sys_mounted_getmntinfo=yes \ + || fu_cv_sys_mounted_getmntinfo=no + ]) + AC_MSG_RESULT($fu_cv_sys_mounted_getmntinfo) + if test $fu_cv_sys_mounted_getmntinfo = yes; then + ac_list_mounted_fs=found + AC_DEFINE(MOUNTED_GETMNTINFO, 1, + [Define if there is a function named getmntinfo for reading the + list of mounted filesystems. (4.4BSD)]) + fi +fi + +if test -z "$ac_list_mounted_fs"; then + # Ultrix + AC_MSG_CHECKING([for getmnt function]) + AC_CACHE_VAL(fu_cv_sys_mounted_getmnt, + [AC_TRY_CPP([ +#include +#include ], + fu_cv_sys_mounted_getmnt=yes, + fu_cv_sys_mounted_getmnt=no)]) + AC_MSG_RESULT($fu_cv_sys_mounted_getmnt) + if test $fu_cv_sys_mounted_getmnt = yes; then + ac_list_mounted_fs=found + AC_DEFINE(MOUNTED_GETMNT, 1, + [Define if there is a function named getmnt for reading the list of + mounted filesystems. (Ultrix)]) + fi +fi + +if test -z "$ac_list_mounted_fs"; then + # BeOS + AC_CHECK_FUNCS(next_dev fs_stat_dev) + AC_CHECK_HEADERS(fs_info.h) + AC_MSG_CHECKING([for BEOS mounted file system support functions]) + if test $ac_cv_header_fs_info_h = yes \ + && test $ac_cv_func_next_dev = yes \ + && test $ac_cv_func_fs_stat_dev = yes; then + fu_result=yes + else + fu_result=no + fi + AC_MSG_RESULT($fu_result) + if test $fu_result = yes; then + ac_list_mounted_fs=found + AC_DEFINE(MOUNTED_FS_STAT_DEV, 1, + [Define if there are functions named next_dev and fs_stat_dev for + reading the list of mounted filesystems. (BeOS)]) + fi +fi + +if test -z "$ac_list_mounted_fs"; then + # SVR2 + AC_MSG_CHECKING([whether it is possible to resort to fread on /etc/mnttab]) + AC_CACHE_VAL(fu_cv_sys_mounted_fread, + [AC_TRY_CPP([#include ], + fu_cv_sys_mounted_fread=yes, + fu_cv_sys_mounted_fread=no)]) + AC_MSG_RESULT($fu_cv_sys_mounted_fread) + if test $fu_cv_sys_mounted_fread = yes; then + ac_list_mounted_fs=found + AC_DEFINE(MOUNTED_FREAD, 1, + [Define if there is no specific function for reading the list of + mounted filesystems. fread will be used to read /etc/mnttab. (SVR2) ]) + fi +fi + +if test -z "$ac_list_mounted_fs"; then + AC_MSG_ERROR([could not determine how to read list of mounted filesystems]) + # FIXME -- no need to abort building the whole package + # Can't build mountlist.c or anything that needs its functions +fi + +dnl AS_IF([test $ac_list_mounted_fs = found], [$1], [$2]) +if test $ac_list_mounted_fs = found ; then [$1] ; else [$2] ; fi + + ]) diff --git a/lib/mountlist.c b/lib/mountlist.c new file mode 100644 index 00000000..b667c443 --- /dev/null +++ b/lib/mountlist.c @@ -0,0 +1,788 @@ +/* mountlist.c -- return a list of mounted filesystems + Copyright (C) 1991, 1992, 1997-2000 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#include "../plugins/config.h" + +#include +#include +#include "mountlist.h" + +#ifdef STDC_HEADERS +# include +#else +void free (); +#endif +#if defined(STDC_HEADERS) || defined(HAVE_STRING_H) +# include +#else +# include +#endif + +#ifndef strstr +char *strstr (); +#endif +char *xmalloc (); +char *xrealloc (); +char *xstrdup (); + +#include +#ifndef errno +extern int errno; +#endif + +#ifdef HAVE_FCNTL_H +# include +#endif + +#ifdef HAVE_UNISTD_H +# include +#endif + +#if HAVE_SYS_PARAM_H +# include +#endif + +#if defined (MOUNTED_GETFSSTAT) /* __alpha running OSF_1 */ +# include +# include +#endif /* MOUNTED_GETFSSTAT */ + +#ifdef MOUNTED_GETMNTENT1 /* 4.3BSD, SunOS, HP-UX, Dynix, Irix. */ +# include +# if !defined(MOUNTED) +# if defined(MNT_MNTTAB) /* HP-UX. */ +# define MOUNTED MNT_MNTTAB +# endif +# if defined(MNTTABNAME) /* Dynix. */ +# define MOUNTED MNTTABNAME +# endif +# endif +#endif + +#ifdef MOUNTED_GETMNTINFO /* 4.4BSD. */ +# include +#endif + +#ifdef MOUNTED_GETMNT /* Ultrix. */ +# include +# include +#endif + +#ifdef MOUNTED_FS_STAT_DEV /* BeOS. */ +# include +# include +#endif + +#ifdef MOUNTED_FREAD /* SVR2. */ +# include +#endif + +#ifdef MOUNTED_FREAD_FSTYP /* SVR3. */ +# include +# include +# include +#endif + +#ifdef MOUNTED_LISTMNTENT +# include +#endif + +#ifdef MOUNTED_GETMNTENT2 /* SVR4. */ +# include +#endif + +#ifdef MOUNTED_VMOUNT /* AIX. */ +# include +# include +#endif + +#ifdef DOLPHIN +/* So special that it's not worth putting this in autoconf. */ +# undef MOUNTED_FREAD_FSTYP +# define MOUNTED_GETMNTTBL +#endif + +#if HAVE_SYS_MNTENT_H +/* This is to get MNTOPT_IGNORE on e.g. SVR4. */ +# include +#endif + +#if defined (MNTOPT_IGNORE) && defined (HAVE_HASMNTOPT) +# define MNT_IGNORE(M) hasmntopt ((M), MNTOPT_IGNORE) +#else +# define MNT_IGNORE(M) 0 +#endif + +#ifdef MOUNTED_GETMNTENT1 /* 4.3BSD, SunOS, HP-UX, Dynix, Irix. */ +/* Return the value of the hexadecimal number represented by CP. + No prefix (like '0x') or suffix (like 'h') is expected to be + part of CP. */ +/* FIXME: this can overflow */ + +static int +xatoi (char *cp) +{ + int val; + + val = 0; + while (*cp) + { + if (*cp >= 'a' && *cp <= 'f') + val = val * 16 + *cp - 'a' + 10; + else if (*cp >= 'A' && *cp <= 'F') + val = val * 16 + *cp - 'A' + 10; + else if (*cp >= '0' && *cp <= '9') + val = val * 16 + *cp - '0'; + else + break; + cp++; + } + return val; +} +#endif /* MOUNTED_GETMNTENT1. */ + +#if MOUNTED_GETMNTINFO + +# if ! HAVE_F_FSTYPENAME_IN_STATFS +static char * +fstype_to_string (short t) +{ + switch (t) + { +# ifdef MOUNT_PC + case MOUNT_PC: + return "pc"; +# endif +# ifdef MOUNT_MFS + case MOUNT_MFS: + return "mfs"; +# endif +# ifdef MOUNT_LO + case MOUNT_LO: + return "lo"; +# endif +# ifdef MOUNT_TFS + case MOUNT_TFS: + return "tfs"; +# endif +# ifdef MOUNT_TMP + case MOUNT_TMP: + return "tmp"; +# endif +# ifdef MOUNT_UFS + case MOUNT_UFS: + return "ufs" ; +# endif +# ifdef MOUNT_NFS + case MOUNT_NFS: + return "nfs" ; +# endif +# ifdef MOUNT_MSDOS + case MOUNT_MSDOS: + return "msdos" ; +# endif +# ifdef MOUNT_LFS + case MOUNT_LFS: + return "lfs" ; +# endif +# ifdef MOUNT_LOFS + case MOUNT_LOFS: + return "lofs" ; +# endif +# ifdef MOUNT_FDESC + case MOUNT_FDESC: + return "fdesc" ; +# endif +# ifdef MOUNT_PORTAL + case MOUNT_PORTAL: + return "portal" ; +# endif +# ifdef MOUNT_NULL + case MOUNT_NULL: + return "null" ; +# endif +# ifdef MOUNT_UMAP + case MOUNT_UMAP: + return "umap" ; +# endif +# ifdef MOUNT_KERNFS + case MOUNT_KERNFS: + return "kernfs" ; +# endif +# ifdef MOUNT_PROCFS + case MOUNT_PROCFS: + return "procfs" ; +# endif +# ifdef MOUNT_AFS + case MOUNT_AFS: + return "afs" ; +# endif +# ifdef MOUNT_CD9660 + case MOUNT_CD9660: + return "cd9660" ; +# endif +# ifdef MOUNT_UNION + case MOUNT_UNION: + return "union" ; +# endif +# ifdef MOUNT_DEVFS + case MOUNT_DEVFS: + return "devfs" ; +# endif +# ifdef MOUNT_EXT2FS + case MOUNT_EXT2FS: + return "ext2fs" ; +# endif + default: + return "?"; + } +} +# endif /* ! HAVE_F_FSTYPENAME_IN_STATFS */ + +/* __NetBSD__ || BSD_NET2 || __OpenBSD__ */ +static char * +fsp_to_string (const struct statfs *fsp) +{ +# if defined HAVE_F_FSTYPENAME_IN_STATFS + return (char *) (fsp->f_fstypename); +# else + return fstype_to_string (fsp->f_type); +# endif +} + +#endif /* MOUNTED_GETMNTINFO */ + +#ifdef MOUNTED_VMOUNT /* AIX. */ +static char * +fstype_to_string (int t) +{ + struct vfs_ent *e; + + e = getvfsbytype (t); + if (!e || !e->vfsent_name) + return "none"; + else + return e->vfsent_name; +} +#endif /* MOUNTED_VMOUNT */ + +/* Return a list of the currently mounted filesystems, or NULL on error. + Add each entry to the tail of the list so that they stay in order. + If NEED_FS_TYPE is nonzero, ensure that the filesystem type fields in + the returned list are valid. Otherwise, they might not be. */ + +struct mount_entry * +read_filesystem_list (int need_fs_type) +{ + struct mount_entry *mount_list; + struct mount_entry *me; + struct mount_entry **mtail = &mount_list; + +#ifdef MOUNTED_LISTMNTENT + { + struct tabmntent *mntlist, *p; + struct mntent *mnt; + struct mount_entry *me; + + /* the third and fourth arguments could be used to filter mounts, + but Crays doesn't seem to have any mounts that we want to + remove. Specifically, automount create normal NFS mounts. + */ + + if(listmntent(&mntlist, KMTAB, NULL, NULL) < 0) + return NULL; + for (p = mntlist; p; p = p->next) { + mnt = p->ment; + me = (struct mount_entry*) xmalloc(sizeof (struct mount_entry)); + me->me_devname = xstrdup(mnt->mnt_fsname); + me->me_mountdir = xstrdup(mnt->mnt_dir); + me->me_type = xstrdup(mnt->mnt_type); + me->me_dummy = ME_DUMMY (me->me_devname, me->me_type); + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + me->me_dev = -1; + *mtail = me; + mtail = &me->me_next; + } + freemntlist(mntlist); + } +#endif + +#ifdef MOUNTED_GETMNTENT1 /* 4.3BSD, SunOS, HP-UX, Dynix, Irix. */ + { + struct mntent *mnt; + char *table = MOUNTED; + FILE *fp; + char *devopt; + + fp = setmntent (table, "r"); + if (fp == NULL) + return NULL; + + while ((mnt = getmntent (fp))) + { + me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry)); + me->me_devname = xstrdup (mnt->mnt_fsname); + me->me_mountdir = xstrdup (mnt->mnt_dir); + me->me_type = xstrdup (mnt->mnt_type); + me->me_dummy = ME_DUMMY (me->me_devname, me->me_type); + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + devopt = strstr (mnt->mnt_opts, "dev="); + if (devopt) + { + if (devopt[4] == '0' && (devopt[5] == 'x' || devopt[5] == 'X')) + me->me_dev = xatoi (devopt + 6); + else + me->me_dev = xatoi (devopt + 4); + } + else + me->me_dev = (dev_t) -1; /* Magic; means not known yet. */ + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; + } + + if (endmntent (fp) == 0) + goto free_then_fail; + } +#endif /* MOUNTED_GETMNTENT1. */ + +#ifdef MOUNTED_GETMNTINFO /* 4.4BSD. */ + { + struct statfs *fsp; + int entries; + + entries = getmntinfo (&fsp, MNT_NOWAIT); + if (entries < 0) + return NULL; + for (; entries-- > 0; fsp++) + { + char *fs_type = fsp_to_string (fsp); + + me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry)); + me->me_devname = xstrdup (fsp->f_mntfromname); + me->me_mountdir = xstrdup (fsp->f_mntonname); + me->me_type = fs_type; + me->me_dummy = ME_DUMMY (me->me_devname, me->me_type); + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + me->me_dev = (dev_t) -1; /* Magic; means not known yet. */ + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; + } + } +#endif /* MOUNTED_GETMNTINFO */ + +#ifdef MOUNTED_GETMNT /* Ultrix. */ + { + int offset = 0; + int val; + struct fs_data fsd; + + while (errno = 0, + 0 < (val = getmnt (&offset, &fsd, sizeof (fsd), NOSTAT_MANY, + (char *) 0))) + { + me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry)); + me->me_devname = xstrdup (fsd.fd_req.devname); + me->me_mountdir = xstrdup (fsd.fd_req.path); + me->me_type = gt_names[fsd.fd_req.fstype]; + me->me_dummy = ME_DUMMY (me->me_devname, me->me_type); + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + me->me_dev = fsd.fd_req.dev; + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; + } + if (val < 0) + goto free_then_fail; + } +#endif /* MOUNTED_GETMNT. */ + +#if defined (MOUNTED_FS_STAT_DEV) /* BeOS */ + { + /* The next_dev() and fs_stat_dev() system calls give the list of + all filesystems, including the information returned by statvfs() + (fs type, total blocks, free blocks etc.), but without the mount + point. But on BeOS all filesystems except / are mounted in the + rootfs, directly under /. + The directory name of the mount point is often, but not always, + identical to the volume name of the device. + We therefore get the list of subdirectories of /, and the list + of all filesystems, and match the two lists. */ + + DIR *dirp; + struct rootdir_entry + { + char *name; + dev_t dev; + ino_t ino; + struct rootdir_entry *next; + }; + struct rootdir_entry *rootdir_list; + struct rootdir_entry **rootdir_tail; + int32 pos; + dev_t dev; + fs_info fi; + + /* All volumes are mounted in the rootfs, directly under /. */ + rootdir_list = NULL; + rootdir_tail = &rootdir_list; + dirp = opendir ("/"); + if (dirp) + { + struct dirent *d; + + while ((d = readdir (dirp)) != NULL) + { + char *name; + struct stat statbuf; + + if (strcmp (d->d_name, "..") == 0) + continue; + + if (strcmp (d->d_name, ".") == 0) + name = xstrdup ("/"); + else + { + name = xmalloc (1 + strlen (d->d_name) + 1); + name[0] = '/'; + strcpy (name + 1, d->d_name); + } + + if (lstat (name, &statbuf) >= 0 && S_ISDIR (statbuf.st_mode)) + { + struct rootdir_entry *re; + + re = (struct rootdir_entry *) xmalloc (sizeof (struct rootdir_entry)); + re->name = name; + re->dev = statbuf.st_dev; + re->ino = statbuf.st_ino; + + /* Add to the linked list. */ + *rootdir_tail = re; + rootdir_tail = &re->next; + } + else + free (name); + } + closedir (dirp); + } + *rootdir_tail = NULL; + + for (pos = 0; (dev = next_dev (&pos)) >= 0; ) + if (fs_stat_dev (dev, &fi) >= 0) + { + /* Note: fi.dev == dev. */ + struct rootdir_entry *re; + + for (re = rootdir_list; re; re = re->next) + if (re->dev == fi.dev && re->ino == fi.root) + break; + + me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry)); + me->me_devname = xstrdup (fi.device_name[0] != '\0' ? fi.device_name : fi.fsh_name); + me->me_mountdir = xstrdup (re != NULL ? re->name : fi.fsh_name); + me->me_type = xstrdup (fi.fsh_name); + me->me_dev = fi.dev; + me->me_dummy = 0; + me->me_remote = (fi.flags & B_FS_IS_SHARED) != 0; + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; + } + *mtail = NULL; + + while (rootdir_list != NULL) + { + struct rootdir_entry *re = rootdir_list; + rootdir_list = re->next; + free (re->name); + free (re); + } + } +#endif /* MOUNTED_FS_STAT_DEV */ + +#if defined (MOUNTED_GETFSSTAT) /* __alpha running OSF_1 */ + { + int numsys, counter, bufsize; + struct statfs *stats; + + numsys = getfsstat ((struct statfs *)0, 0L, MNT_WAIT); + if (numsys < 0) + return (NULL); + + bufsize = (1 + numsys) * sizeof (struct statfs); + stats = (struct statfs *)xmalloc (bufsize); + numsys = getfsstat (stats, bufsize, MNT_WAIT); + + if (numsys < 0) + { + free (stats); + return (NULL); + } + + for (counter = 0; counter < numsys; counter++) + { + me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry)); + me->me_devname = xstrdup (stats[counter].f_mntfromname); + me->me_mountdir = xstrdup (stats[counter].f_mntonname); + me->me_type = mnt_names[stats[counter].f_type]; + me->me_dummy = ME_DUMMY (me->me_devname, me->me_type); + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + me->me_dev = (dev_t) -1; /* Magic; means not known yet. */ + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; + } + + free (stats); + } +#endif /* MOUNTED_GETFSSTAT */ + +#if defined (MOUNTED_FREAD) || defined (MOUNTED_FREAD_FSTYP) /* SVR[23]. */ + { + struct mnttab mnt; + char *table = "/etc/mnttab"; + FILE *fp; + + fp = fopen (table, "r"); + if (fp == NULL) + return NULL; + + while (fread (&mnt, sizeof mnt, 1, fp) > 0) + { + me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry)); +# ifdef GETFSTYP /* SVR3. */ + me->me_devname = xstrdup (mnt.mt_dev); +# else + me->me_devname = xmalloc (strlen (mnt.mt_dev) + 6); + strcpy (me->me_devname, "/dev/"); + strcpy (me->me_devname + 5, mnt.mt_dev); +# endif + me->me_mountdir = xstrdup (mnt.mt_filsys); + me->me_dev = (dev_t) -1; /* Magic; means not known yet. */ + me->me_type = ""; +# ifdef GETFSTYP /* SVR3. */ + if (need_fs_type) + { + struct statfs fsd; + char typebuf[FSTYPSZ]; + + if (statfs (me->me_mountdir, &fsd, sizeof fsd, 0) != -1 + && sysfs (GETFSTYP, fsd.f_fstyp, typebuf) != -1) + me->me_type = xstrdup (typebuf); + } +# endif + me->me_dummy = ME_DUMMY (me->me_devname, me->me_type); + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; + } + + if (ferror (fp)) + { + int saved_errno = errno; + fclose (fp); + errno = saved_errno; + goto free_then_fail; + } + + if (fclose (fp) == EOF) + goto free_then_fail; + } +#endif /* MOUNTED_FREAD || MOUNTED_FREAD_FSTYP. */ + +#ifdef MOUNTED_GETMNTTBL /* DolphinOS goes it's own way */ + { + struct mntent **mnttbl=getmnttbl(),**ent; + for (ent=mnttbl;*ent;ent++) + { + me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry)); + me->me_devname = xstrdup ( (*ent)->mt_resource); + me->me_mountdir = xstrdup( (*ent)->mt_directory); + me->me_type = xstrdup ((*ent)->mt_fstype); + me->me_dummy = ME_DUMMY (me->me_devname, me->me_type); + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + me->me_dev = (dev_t) -1; /* Magic; means not known yet. */ + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; + } + endmnttbl(); + } +#endif + +#ifdef MOUNTED_GETMNTENT2 /* SVR4. */ + { + struct mnttab mnt; + char *table = MNTTAB; + FILE *fp; + int ret; + int lockfd = -1; + +# if defined F_RDLCK && defined F_SETLKW + /* MNTTAB_LOCK is a macro name of our own invention; it's not present in + e.g. Solaris 2.6. If the SVR4 folks ever define a macro + for this file name, we should use their macro name instead. + (Why not just lock MNTTAB directly? We don't know.) */ +# ifndef MNTTAB_LOCK +# define MNTTAB_LOCK "/etc/.mnttab.lock" +# endif + lockfd = open (MNTTAB_LOCK, O_RDONLY); + if (0 <= lockfd) + { + struct flock flock; + flock.l_type = F_RDLCK; + flock.l_whence = SEEK_SET; + flock.l_start = 0; + flock.l_len = 0; + while (fcntl (lockfd, F_SETLKW, &flock) == -1) + if (errno != EINTR) + { + int saved_errno = errno; + close (lockfd); + errno = saved_errno; + return NULL; + } + } + else if (errno != ENOENT) + return NULL; +# endif + + errno = 0; + fp = fopen (table, "r"); + if (fp == NULL) + ret = errno; + else + { + while ((ret = getmntent (fp, &mnt)) == 0) + { + me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry)); + me->me_devname = xstrdup (mnt.mnt_special); + me->me_mountdir = xstrdup (mnt.mnt_mountp); + me->me_type = xstrdup (mnt.mnt_fstype); + me->me_dummy = MNT_IGNORE (&mnt) != 0; + me->me_remote = ME_REMOTE (me->me_devname, me->me_type); + me->me_dev = (dev_t) -1; /* Magic; means not known yet. */ + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; + } + + ret = fclose (fp) == EOF ? errno : 0 < ret ? 0 : -1; + } + + if (0 <= lockfd && close (lockfd) != 0) + ret = errno; + + if (0 <= ret) + { + errno = ret; + goto free_then_fail; + } + } +#endif /* MOUNTED_GETMNTENT2. */ + +#ifdef MOUNTED_VMOUNT /* AIX. */ + { + int bufsize; + char *entries, *thisent; + struct vmount *vmp; + + /* Ask how many bytes to allocate for the mounted filesystem info. */ + mntctl (MCTL_QUERY, sizeof bufsize, (struct vmount *) &bufsize); + entries = xmalloc (bufsize); + + /* Get the list of mounted filesystems. */ + mntctl (MCTL_QUERY, bufsize, (struct vmount *) entries); + + for (thisent = entries; thisent < entries + bufsize; + thisent += vmp->vmt_length) + { + char *options, *ignore; + + vmp = (struct vmount *) thisent; + me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry)); + if (vmp->vmt_flags & MNT_REMOTE) + { + char *host, *path; + + me->me_remote = 1; + /* Prepend the remote pathname. */ + host = thisent + vmp->vmt_data[VMT_HOSTNAME].vmt_off; + path = thisent + vmp->vmt_data[VMT_OBJECT].vmt_off; + me->me_devname = xmalloc (strlen (host) + strlen (path) + 2); + strcpy (me->me_devname, host); + strcat (me->me_devname, ":"); + strcat (me->me_devname, path); + } + else + { + me->me_remote = 0; + me->me_devname = xstrdup (thisent + + vmp->vmt_data[VMT_OBJECT].vmt_off); + } + me->me_mountdir = xstrdup (thisent + vmp->vmt_data[VMT_STUB].vmt_off); + me->me_type = xstrdup (fstype_to_string (vmp->vmt_gfstype)); + options = thisent + vmp->vmt_data[VMT_ARGS].vmt_off; + ignore = strstr (options, "ignore"); + me->me_dummy = (ignore + && (ignore == options || ignore[-1] == ',') + && (ignore[sizeof "ignore" - 1] == ',' + || ignore[sizeof "ignore" - 1] == '\0')); + me->me_dev = (dev_t) -1; /* vmt_fsid might be the info we want. */ + + /* Add to the linked list. */ + *mtail = me; + mtail = &me->me_next; + } + free (entries); + } +#endif /* MOUNTED_VMOUNT. */ + + *mtail = NULL; + return mount_list; + + + free_then_fail: + { + int saved_errno = errno; + *mtail = NULL; + + while (mount_list) + { + me = mount_list->me_next; + free (mount_list->me_devname); + free (mount_list->me_mountdir); + /* FIXME: me_type is not always malloced. */ + free (mount_list); + mount_list = me; + } + + errno = saved_errno; + return NULL; + } +} diff --git a/lib/mountlist.h b/lib/mountlist.h new file mode 100644 index 00000000..c41490c9 --- /dev/null +++ b/lib/mountlist.h @@ -0,0 +1,50 @@ +/* mountlist.h -- declarations for list of mounted filesystems + Copyright (C) 1991, 1992, 1998, 2000 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* A mount table entry. */ +struct mount_entry +{ + char *me_devname; /* Device node pathname, including "/dev/". */ + char *me_mountdir; /* Mount point directory pathname. */ + char *me_type; /* "nfs", "4.2", etc. */ + dev_t me_dev; /* Device number of me_mountdir. */ + unsigned int me_dummy : 1; /* Nonzero for dummy filesystems. */ + unsigned int me_remote : 1; /* Nonzero for remote fileystems. */ + struct mount_entry *me_next; +}; + +#ifndef PARAMS +# if defined PROTOTYPES || (defined __STDC__ && __STDC__) +# define PARAMS(Args) Args +# else +# define PARAMS(Args) () +# endif +#endif + +struct mount_entry *read_filesystem_list PARAMS ((int need_fs_type)); + +#ifndef ME_DUMMY +# define ME_DUMMY(fs_name, fs_type) \ + (!strcmp (fs_type, "auto") \ + || !strcmp (fs_type, "autofs") \ + /* for Irix 6.5 */ \ + || !strcmp (fs_type, "ignore")) +#endif + +#ifndef ME_REMOTE +# define ME_REMOTE(fs_name, fs_type) (strchr (fs_name, ':') != 0) +#endif -- cgit v1.2.3-74-g34f1